scholarly journals Dynamical correction to the Bethe–Salpeter equation beyond the plasmon-pole approximation

2020 ◽  
Vol 153 (11) ◽  
pp. 114120
Author(s):  
Pierre-François Loos ◽  
Xavier Blase
Keyword(s):  
Pole Approximation ◽  
Dynamical Correction

Test of the Unitary Pole Approximation to the Malfliet-Tjon Potential for Elastic Neutron-Deuteron Scattering

1975 ◽  
Vol 30 (4) ◽  
pp. 434-436
Author(s):  
H. Ziegelmann
Keyword(s):  
Soft Core ◽  
Breakup Threshold ◽  
Pole Approximation ◽  
Elastic Neutron ◽  
Deuteron Scattering ◽  
Unitary Pole

Abstract The quality of the unitary pole approximation to the soft-core Malfliet-Tjon potential is demon-strated for elastic neutron-deuteron scattering above breakup threshold.

scholarly journals Pseudogap and the specific heat of high Tcsuperconductors: a Hubbard model in a n-pole approximation

2015 ◽  
Vol 592 ◽  
pp. 012075
Author(s):  
E J Calegari ◽  
A C Lausmann ◽  
S G Magalhaes ◽  
C M Chaves ◽  
A Troper
Keyword(s):  
Hubbard Model ◽  
Specific Heat ◽  
Pole Approximation

Investigation of the accuracy of the unitary pole approximation

1973 ◽  
Vol 207 (3) ◽  
pp. 527-537 ◽  
Author(s):  
M.K. Srivastava ◽  
A.P.S. Sirohi
Keyword(s):  
Pole Approximation ◽  
Unitary Pole
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